EPA Infrastructure Pvt. Ltd.EPA Infrastructure Pvt. Ltd.

Corrosion Protection

B-267, North Ex MallSector-9, Rohini,

Delhi-110085

What is Protection?

Corrosion is the gradual destruction of materials, (usually metals), by chemical reaction with its environment.

In the most common use of the word, this means electrochemical oxidation of metals in reaction with an oxidant such as oxygen. Rusting, the formation of iron oxides, is a well-known example of electrochemical corrosion. This type of damage typically produces oxide(s) or salt(s) of the original metal. Corrosion can also occur in materials other than metals, such as ceramics or polymers, although in this context, the term degradation is more common. Corrosion degrades the useful properties of materials and structures including strength, appearance and permeability to liquids and gases.

What is corrosion Protection

Some metals are more intrinsically resistant to corrosion than others (for some examples, see galvanic series). There are various ways of protecting metals from corrosion (oxidation) including painting, hot dip galvanizing, and combinations of these.

Thus the method of coating metals which are highlt affected by exposure to moisture or oxygen with these inert metals to prevent them from degradation is know as corrosion protection.

Methods of Corrosion Protection

Surface can be protected from corrosion by following methods:

Corrosion protection by surface treatment is done by the following ways: Applied Coating Reactive Coating Biofilm Coating Anodization

Controlled permeability formwork

Cathodic Protection

Anodic Protection

Advantages of Corrosion Protection

Advantages of corrosion protection are as follows:

Helps increase the life of the metal

Helps increase the serviceability of the metal or structure

Prevent decay and damage of the metal

Enhances the beauty of the metal

Corrosion protection paint and protection to wear and fatigue